Fix some typos in author names

integration/src/test/java/org/slf4j/test_osgi/FelixHost.java

@@ -41,7 +41,7 @@ import org.osgi.framework.Constants;
  * Runs a hosted version of Felix for testing purposes. Any bundle errors are
  * reported via the FrameworkListener passed to the constructor.
  * 
- * @author Ceki Gücü
+ * @author Ceki Gülcü
  */
 public class FelixHost {
 

log4j-over-slf4j/src/test/java/org/apache/log4j/NDCTest.java

@@ -31,7 +31,7 @@ import org.junit.Before;
 import org.junit.Test;
 
 /**
- * @author Ceki Gücü
+ * @author Ceki Gülcü
  */
 public class NDCTest {
 

slf4j-ext/src/main/java/org/slf4j/cal10n/LocLoggerFactory.java

@@ -41,7 +41,7 @@ import ch.qos.cal10n.IMessageConveyor;
  * instance does have any state beyond that of the {@link Logger} instance it
  * wraps and its message conveyor.
  *
- * @author Ceki Gücü
+ * @author Ceki Gülcü
  *
  */
 public class LocLoggerFactory {